What is the format of the contribution margin version of the income statement? . What are the three equations for calculating the break-even point? . What are the three equations for calculating target profit? What are the two equations for calculating the contribution margin ratio? It is used as a short cut for evaluating changes in profitability. If sales change, the contribution margin ratio can predict a change in what income statement amount? What is operating leverage? It, too, is considered a short cut. If sales change, it can predict a change in what income statement amount? . What is the margin of safety? How would the break-even point be calculated if a business sells more than one product? Why are there so many different equations for calculating unknown amounts? Is there a right and a wrong version of each